Vending machine



FIG. 1 is a front elevational view of a vending machine showing my new design;

FIG. 2 is a right-side elevational view thereof, the left side being a mirror image thereto;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a rear elevational view thereof.

The broken line showings of an animal figure in FIGS. 1 and 2 are environmental and form no part of the claimed design. 

The ornamental design for a vending machine, as shown and described. 